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powerpoint 5 - population genetics

powerpoint 5 - population genetics - Poplation Genetics How...

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Poplation Genetics : How does a population evolve? Outline: 1. Key concepts 2. Individuals don’t evolve, populations do 3. The Hardy-Weinberg Theroem 4. The microevolution and natural selection 5. Genetic drift 6. Gene flow Key concepts: Individuals of a population have the same number and kinds of genes In a population, a gene may exist in different forms Microevolution means that changes have occurred in a population’s allele frequencies Allele frequencies can change through mutations, gene flow, genetic drife, nonrandom mating, and natural selection Individuals Don’t Evolve, Populations Do Population – Is a localized group of individuals that are capable of interbreeding and producing fertile offspring Polymorphism – traits come in two or more distinct forms Gene pool – pool of genetic resources that, in theory, is shared by all members of the population The Hardy-Weinberg Theorem
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